Posts by Andra Malina

Abstract

We consider the problem of interpolating large sets of scattered data on the sphere using Shepard-Bernoulli operators constructed based on two types of basis functions. We study the interpolation properties and the approximation errors of the methods proposed here. We evaluate the efficiency using several test functions and the practical applicability through two real-data problems.

Authors

Teodora Cătinaş
Faculty of Mathematics and Computer Science, Babeş-Bolyai University, Cluj-Napoca, Romania

Andra Malina
Faculty of Mathematics and Computer Science, Babeş-Bolyai University, Cluj-Napoca, Romania
Tiberiu Popoviciu Institute of Numerical Analysis, Romanian Academy, Cluj-Napoca, Romania

Keywords

Interpolation of scattered data; Interpolation on sphere; Shepard operator; Bernoulli operator; Error estimations

Paper coordinates

T. Catinas, A. Malina, Spherical Shepard-Bernoulli operator, J. Appl. Math. Comput., 2024, https://doi.org/10.1007/s12190-024-02285-z

PDF

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About this paper

Journal

Journal of Applied Mathematics and Computing

Publisher Name

Springer Link

DOI

https://doi.org/10.1007/s12190-024-02285-z

Print ISSN
1598-5865
Online ISSN

1865-2085

Paper (preprint) in HTML form

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3. Caira, R., Dell’Accio, F., Di Tommaso, F.: On the bivariate Shepard-Lidstone operators. J. Comput. Appl. Math. 236(7), 1691–1707 (2012)
4. Cătinaș, T.: The combined Shepard-Lidstone bivariate operator. In: Trends and Applications in Constructive Approximation. International Series of Numerical Mathematics (de Bruin,M.G. et al. (eds.)), 151, pp. 77–89, Springer Group-Birkhäuser Verlag (2005)
5. Cătinaș, T.: The bivariate Shepard operator of Bernoulli type. Calcolo 44(4), 189–202 (2007)
6. Cătinaș, T., Malina, A.: Shepard operator of least squares thin-plate spline type. Stud. Univ. Babeș-Bolyai Math. 66(2), 257–265 (2021)
7. Cătinaș, T., Malina, A.: The combined Shepard operator of inverse quadratic and inverse multiquadric type. Stud. Univ. Babeș-Bolyai Math. 67, 579–589 (2022)
8. Cătinaș, T., Malina, A.: Spherical interpolation of scattered data using least squares thin-plate spline and inverse multiquadric functions. Numer. Algor. (2024). https://doi.org/10.1007/s11075-024-01755-6
9. Cătinaș, T., Malina, A.: Spherical Shepard-Lidstone type operators, manuscript
10. Cavoretto, R., De Rossi, A.: Fast and accurate interpolation of large scattered data sets on the sphere. J. Comput. Appl. Math. 234, 1505–1521 (2010)
11. Cavoretto, R., De Rossi, A.: Numerical comparison of different weights in Shepard’s interpolants on the sphere. Appl. Math. Sci. 4, 3425–3435 (2010)
12. Cavoretto, R., De Rossi, A.: Spherical interpolation using the partition of unity method: an efficient and flexible algorithm. Appl. Math. Lett. 25, 1251–1256 (2012)
13. Cavoretto, R., De Rossi, A.: Achieving accuracy and efficiency in spherical modelling of real data. Math. Methods Appl. Sci. 37, 1449–1459 (2014)
14. Cavoretto, R., De Rossi, A., Dell’Accio, F., Di Tommaso, F.: Fast computation of triangular Shepard interpolants. J. Comput. Appl. Math. 354, 457–470 (2019)
15. Cavoretto, R., De Rossi, A., Dell’Accio, F., Di Tommaso, F.: An efficient trivariate algorithm for tetrahedral Shepard interpolation. J. Sci. Comput. 82, 57 (2020)
16. Costabile, F.A., Dell’Accio, F.: Expansion over a rectangle of real functions in Bernoulli polynomials and applications. BIT 41, 451–464 (2001)
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18. Costabile, F.A., Dell’Accio, F.: Lidstone Approximation on the Triangle. Appl. Numer. Math. 52, 339–361 (2005)
19. Costabile, F.A., Dell’Accio, F., Gualtieri, M.I.: A new approach to Bernoulli polynomials. Rendiconti di Matematica e delle sue Applicazioni 26, 1–12 (2006)
20. Costabile, F.A., Dell’Accio, F., Guzzardi, L.: New bivariate polynomial expansion with boundary data on the simplex. Calcolo 45, 177–192 (2008)
21. Costabile, F.A., Dell’Accio, F., Di Tommaso, F.: Complementary Lidstone Interpolation on Scattered Data Sets. Numer. Algorithms 64, 157–180 (2013)
22. Dell’Accio, F., Di Tommaso, F., Hormann, K.: On the approximation order of triangular Shepard interpolation. IMA J. Numer. Anal. 36, 359–379 (2016)
23. Dell’Accio, F., Di Tommaso, F.: Bivariate Shepard-Bernoulli operators. Math. Comput. Simulation 141, 65–82 (2017)

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